A Simple USB to TTL Convertor

[anandjm 0]

I recently purchased a Cubietruck/Cubieboard3 (http://cubieboard.org/2013/10/30/cubieboard3-cubietruck-is-all-ready/) and since I want to customize the kernels, I needed a USB to TTL Serial converter at 115200bps. Being a weekend I was too lazy to go out to the electronics hardware market, and since I wanted it immediately I did not want to buy it online. So I felt I should be able to use one of my Stellaris Launchpad boards for this purpose. Here is the code for USB to TTL Serial conversion. A better option would be to code directly in "C" with the USB library in Tivaware/Stellarisware, but this code is so simple that I would not waste my time doing it right now. The code should work with any hardware supported by the Wiring framework. 

 

 -----Code starts here----------

//Red-Blue Combination is most visible for data status indication
const int read_LED = RED_LED; //Red LED blinks on data read
const int write_LED = BLUE_LED; //Blue LED blinks on data write

int read_State=LOW, write_State=LOW;

void setup()
{
  pinMode(read_LED, OUTPUT); 
  pinMode(write_LED, OUTPUT);
  Serial.begin(115200);
  Serial1.setPins(UART1_PORTB); //Comment if you need to use the alternate port PC4/PC5
  Serial1.begin(115200);
  Serial.println("Simple USB TTL Converter - Stellaris/Tiva Launchpad");
}

void loop()
{
  if (Serial.available()){
    digitalWrite(write_LED,HIGH);
    Serial1.write(Serial.read());    
  }

  if (Serial1.available()){
    digitalWrite(read_LED,HIGH);
    Serial.write(Serial1.read());
  }

  digitalWrite(write_LED,LOW);
  digitalWrite(read_LED,LOW);
}

------Code Ends here -------

[bluehash 1,581]

@@anandjm Thanks for sharing and welcome!